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Deer Island Wastewater Treatment Plant

4.5 ★★★★★ · 44 Google reviews · 24 photos
Sewage treatment plant · Watertown, MA

Deer Island Wastewater Treatment Plant at a glance

Reviewers frequently describe the site as a scenic location for walking, cycling, and viewing harbor islands, noting the paved loop and pleasant atmosphere. Some visitors mention the facility's role in water treatment and its low odor levels. However, lower-rated comments criticize staff interactions, specifically alleging that security personnel were unprofessional and confrontational toward visitors.

  • Google rating: 4.5 out of 5 from 44 reviews (75% five-star).
  • Reviews on this page: 44 Google reviews (22 with written comments, 7 with photos).
  • Owner responses: the business replied to 0% of reviews.
  • Most recent review: April 1, 2026.
  • Service: Water Purification Service serving Watertown, Massachusetts.

Data from Google, last updated October 25, 2026.

Photos

Customer reviews

4.5
★★★★★
44 reviews on Google
5★33
4★7
3★0
2★1
1★3

Reviews from Google, shown as published (original wording, unedited).

Joseph SpinaleLocal Guide · 75 reviews
★★★★★

Thanks for treating our water!

Review from Google · view on Google
Julian SandlerLocal Guide · 12 reviews
★★★★★

The water had a slightly weird aftertaste, but overall it was very tasty. 10/10 would go again.

Review from Google · view on Google
Alirio GongoraLocal Guide · 185 reviews
★★★★★

Excelente lugar para caminar y hacer ejercicio al lado del mar y de la espectacular planta d tratamiento

Review from Google · view on Google
Main Street DroneLocal Guide · 13 reviews
★★★★★

Wastewater Treatment plant turned National Park. Great place to visit in the summer for a walk, sightseeing, roller skating, and fishing.

Review from Google · view on Google
NS2025Local Guide · 63 reviews
★★★★★

Wannabe tough guy is security there. Threatened one of my friends but backed down quickly. Definitely weak and unprofessional.

Review from Google · view on Google
picalo oneillLocal Guide · 181 reviews
★★★★★

it's always 98.6 degrees for some reason down here. they have the best lemonade and chocolate bars. these people are professionals who never let a floater get away from them.

Review from Google · view on Google
Mallori GalaxyLocal Guide · 20 reviews
★★★★★

This place has great vibrations and atmosphere. Feels like home.

Review from Google · view on Google
Jim BrombergLocal Guide · 494 reviews
★★★★★

What an amazing walk! On windy days, dress very warm and plan on potentially protecting yourself and your camera from huge splashes of water! The waves come crashing over the walls during several parts of this walk! The views are stunning and you are facing the ocean the entire time! Waterproof footwear will have your feet thanking you!

Review from Google · view on Google
Alex PearlsteinLocal Guide · 94 reviews
★★★★★

I tell ya, You haven't been treated like wastewater until you've been to deer. I mean that in all the best ways. You go in feeling like gray water, and, then leave feeling fresh as a daisy. I only trust them with my waste water. I don't even know why someone would want to or even consider going anywhere else.

Review from Google · view on Google
Jack CLocal Guide · 41 reviews
★★★★★

No complaints. They do their job well and keep the harbor clean.

Review from Google · view on Google

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